Sinker-slider

Abstract

A first horizontal hollow cylinder open at both ends has a first narrow elongated slot. A second horizontal hollow cylinder open at both ends is disposed concentrically within the firtst cylinder and has a second narrow elongated slot that extends between its ends. A vertically elongated element is secured at its upper end to the first cylinder and has an opening intermediate its ends. A flexible elongated connector secured at one end to the lower end of the element with its other end being detachable with the element opening. A rotatable member is secured to one end of the second cylinder and is spaced from the first cylinder so that the member can rotate the second cylinder about its axis without rotating the first cylinder.

What is claimed is:  
     
       1. A plastic sinker-slider structure comprising: 
       a first horizontal hollow cylinder open at both ends, said first cylinder having a first narrow elongated slot that extends between its ends and exposes the first cylinder interior;  
       a second horizontal hollow cylinder open at both ends and disposed concentrically within and spaced from the first cylinder, said second cylinder having a second narrow elongated slot that extends between its ends and exposes the second cylinder interior; each end of said second cylinder being aligned with a corresponding end of said first cylinder;  
       a vertical elongated element secured at an upper end to said second cylinder and having a lower end extending therebelow, said element having an opening intermediate its ends;  
       a flexible elongated connector secured at one end to the lower end of the element, the other end of said connector being detachably securable with said element opening; and  
       a rotatable member secured at one end of the second cylinder and spaced from the first cylinder so that the member can rotate the second cylinder about its axis without rotating the first cylinder that remains in fixed non-rotatable position, said member having a first position of rotation at which the two slots are aligned and a second position of rotation at which said slots are out of alignment;  
       the first cylinder having a raised ledge secured to its inner surface and disposed opposite the first slot, the second slot engaging said ledge when the member is in the second position, the second cylinder having a notch which engages said ledge to lock the slots in the first position.